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Pearl (PRL)

A modern cryptocurrency built for speed, privacy, and scalability

Active pearlhash
Coin Specifications
  • Coin Name
    Pearl
  • Ticker Symbol
    PRL
  • Algorithm
    pearlhash (Plonky2 ZK + Blake3 + GEMM, GPU)
  • Block Time
    3 min 14 s (194 s, WTEMA-targeted)
  • Max Supply
    2,100,000,000 PRL (2.1 B cap, approached asymptotically)
  • Block Reward
    ≈ 2,660 PRL at current height (smooth exponential decay, no halving — see formula below)
Pool Information
  • Pool Fee
    0% on subsidy (launch promo)
  • Payout Scheme
    PPLNS
  • PPLNS Window
    Avg. last 5 blocks
  • Payout Schedule
    Every 15 minutes
  • Minimum Payout
    0.5 PRL
  • Block Confirmations
    100 blocks (chain coinbase maturity — payouts wait for this)
Fee Structure
  • Pool Fee

    Launch promo: pool credits miners the full chain subsidy at every block (currently ≈ 2,660 PRL) and keeps only the transaction fees baked into the coinbase. The mempool is light right now so the pool's tx-fee take is ≈ 0; as Pearl traffic grows, that's how the pool earns.

    0% on subsidy (launch promo)
  • Miner Receives

    Full chain subsidy at the block's height (≈ 2,660 PRL today; smoothly decays over time — see the formula below). Tx fees in the coinbase stay with the pool.

    ≈ 2,660 PRL (full subsidy at current height; tx fees stay with pool)
Block subsidy — how the per-block reward shrinks

Pearl emits new supply on a smooth exponential decay — no halvings, no cliffs. Each block h produces:

subsidy(h) = totalSupply × EC ÷ ( (h + EC) × (h − 1 + EC) )
totalSupply = 2,100,000,000 × 108 grain (= 2.1 B PRL hard cap)
EC = 650,226  ←  4 years × (1 day ÷ 194 s/block)

Reference points along the curve (target 3 min 14 s per block):

Height Per-block reward ~ approx. age
1 (genesis era)≈ 3,230 PRLday 1
66,200 (today)≈ 2,660 PRL≈ 5 months
650,226 (1 × EC)≈ 805 PRL≈ 4 years
1,300,452 (2 × EC)≈ 358 PRL≈ 8 years
3,251,130 (5 × EC)≈ 97 PRL≈ 20 years

Coinbase outputs become spendable after 100 confirmations (chain-level CoinbaseMaturity) — that is the gate every payout has to wait for. The pool's internal ledger starts crediting your share contribution earlier (at 10 confirmations) so balances update in the dashboard sooner, but no PRL leaves the wallet before the 100-conf chain rule is satisfied.

Official Pearl Links
GitHub Repository

github.com/pearl-research-labs/pearl
Block Explorer

explorer.pearlresearch.ai
Discord Community

discord.gg/joinpearl
Whitepaper (arXiv)

arxiv.org/abs/2504.09971
X (Twitter)

@PearlResearch
About Pearl — Proof-of-Useful-Work

Pearl is an L1 blockchain whose mining workload is real, useful computation. Each share is a verifiable proof that the miner performed an arbitrary matrix multiplication (GEMM) — the kind that powers LLM inference, scientific simulation, graphics, and most modern ML workloads. The protocol is described in arXiv:2504.09971.

  • GEMM-as-work

    A miner samples a random (h × w × k) matrix problem, multiplies it on GPU, and commits to the result. SRBMiner-MULTI uses the reference shape (h=8, w=16, k=4096 → 524,288 ops/trial).

  • Plonky2 zero-knowledge verification

    Validity is checked by a succinct ZK proof rather than re-running the matrix multiply. Verification is constant-time regardless of problem size, so light clients and SPV wallets remain cheap.

  • Post-quantum signatures (XMSS)

    Wallet addresses use the XMSS hash-based signature scheme — Shor-resistant from day one. Bech32m HRPs: prl1… (mainnet) / tprl1… (testnet).

  • Smooth emission curve

    No halvings. The subsidy decays continuously toward an asymptotic 2.1 B PRL cap. Current per-block reward is around 2,660 PRL and shrinks by a few percent per year — predictable for miners and miner-economics modellers alike.

  • WTEMA difficulty regulation

    Block target 3 min 14 s. WTEMA (Weighted-Time Exponential Moving Average) retarget every block — no 2,016-block surprises. Half-life is one week, so difficulty stabilises against sudden hashrate changes within ~1 epoch.

Why mine PRL here?
  • 0% fee on chain subsidy

    Launch promotion. Pool keeps only the (currently negligible) transaction-fee portion of each block.

  • Adaptive VarDiff (COLD → WARM → HOT)

    Newton-step gain scheduling with a starvation watchdog. Your rig converges to ~10 s/share in 4-6 retargets (~2 min) — see Start Mining.

  • PPLNS (window = 5)

    Pool-hopping resistant. Your credit depends on your share of the last 5 blocks' work, not just the current round.

  • BIP22 long-poll + 250 ms backup poll

    Stratum gets new templates from pearld within milliseconds of a tip change. No more stale-share orphans from being late to the block boundary.

  • 15-minute payouts, 0.5 PRL minimum

    Once a block matures (100 confs ≈ 5.4 h), accrued credits go out on the next cycle. No multi-day payout lag.